Most native apps are some half gig large where even the heaviest website is a few mb. They dont let you highlight text and have other bizarre design choices. Even worse, they request importing contacts list which isnt even an option on the web.
Native apps could be butter but more often than not they are like margarine. Smooth, oily, and not good for you.
Reddit always asks you to use its native app, for example. Why the fuck would I care so much about Reddit that I want it outside of my browser? Same goes for any other website.
But I'll eat my hat before I'll install Reddit's own app. Reddit killing off 3rd party apps is why I post here and not there.
I'm on old.reddit.com too and I use the mobile app (including the 3rd party ones back when they existed) for one primary reason: Two windows I can quickly switch back and forth on. On my phone I use Reddit to look up things. I can have a Reddit thread on one window and a Google search on the other and go back and forth. In a browser switching tabs back and forth is painful, often reloading pages, losing the spot in the browser, having this url bar and top bar taking up tons of screen space.